celestial body

variants: or less commonly celestial object
plural celestial bodies also celestial objects

Definition of celestial body

: an aggregation of matter in the universe (such as a planet, star, or nebula) that can be considered as a single unit (as for astronomical study) But many scientists began seriously rethinking their notions of the solar system in 1992, when we identified a small celestial body—just a few hundred kilometers across—sited farther from the sun than any of the known planets.— Jane X. Luu et al. As the observer looks at a star or other celestial body its light rays pass through a single point on the earth's surface.Dutton's Navigation and Piloting, 14th edition A black hole forms when a star or other celestial object collapses under the pull of its own gravity.— Mary Durack Miller

called also heavenly body

First Known Use of celestial body

1538, in the meaning defined above

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The first known use of celestial body was in 1538

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Last Updated

18 May 2021

Cite this Entry

“Celestial body.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/celestial%20body. Accessed 15 Jun. 2021.

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